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Finding the Fourth Proportional to 68,934.70, 96,639.80 and 68,934.70

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Solution

The fourth proportional to 68,934.70, 96,639.80 and 68,934.70 is: 96,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,934.70 : 96,639.80 = 68,934.70 : x
  2. Step 2: Convert to fraction form
    68,934.70/96,639.80 = 68,934.70/x
  3. Step 3: Cross multiply
    68,934.70x = 96,639.80 × 68,934.70
  4. Step 4: Simplify right side
    68,934.70x = 6,661,835,621.06
  5. Step 5: Solve for x
    x = 6,661,835,621.06/68,934.70
  6. Step 6: Final answer
    x = 96,639.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.